Authorities recovered cocaine in the hotel room where Whitney Houston died … TMZ has learned.

As for the quantity of cocaine that was found, official documents show one of the items police recovered was “white, powdery remnants.” Sources tell us the powder was tested and it’s cocaine.

We’re told Beverly Hills detectives are NOT investigating rumors that someone removed cocaine from the room, because they’re convinced it wasn’t removed.

Sources directly involved in the investigation told TMZ early on … no illegal drugs were recovered from the room. We have circled back with these sources who now tell us they were unaware at the time that cocaine was present.